Affiliations Research 1926Technologist And NematologistU S Department Of Agriculture1927Technologist And NematologistU S Department Of Agriculture1928Technologist And NematologistU S Department Of Agriculture1929NematologistUnited States Department Of Agriculture1930Agricultural Technologist And NematologistUnited States Department Of Agriculture1931Principal NematologistUnited States Department Of Agriculture 1926Zoology[role unknown]1927[subject unknown][role unknown]1928[subject unknown][role unknown]1929[subject unknown][role unknown]1930[subject unknown][role unknown]1931[subject unknown]Independent